How to style custom control components in Sidebar?

Hi folks, I have a question how to style the control components for Sidebar.

I have a Component with use Chakra as UI library:

const ControlComp = () => (
        <Box pl="lg" bg="yellow.100">

Then I register the component in Plasmic:

PLASMIC.registerComponent(Component, {
  name: "Component",

  props: {
    customProps: {
      type: "custom",
      control: ControlComp,

The issue that style is not applied for ControlComp in sidebar. Component uses the Chakra style and it works there.

Any ideas why it doesn’t work?

Do you know how chakra emits styles? Is this a solution that dynamically injects styles at runtime, or does it rely on some style sheet to get included?